Probably already suggested but....
formalize an alum exhibition heat(s) competition:
5 member push team must have at least 100 total years since graduation.
Example: 1990 graduate 2011 - 1990 = 21 years.
or like a real old guy 2011 - 1972 = 39 years.
Add em up to be over 100.
Drivers have to be present drivers I assume.
Could add a little more alum interest for reunions?